How do we know God's covenant with Abraham is true?

The truthfulness of God's covenant with Abraham is evidenced through the prophetic details provided in Genesis 15, where God outlines the future of Abraham's descendants. They would endure slavery in Egypt and return to the Promised Land, fulfilling the covenant promises God made. In Exodus, we see the fulfillment of this prophecy as the Israelites, after 400 years, are delivered from bondage and return to the land given to them. This continuity through scripture affirms the enduring nature of God's promises and His faithfulness in carrying them out.